package com.android.baselibrary.util;

import android.util.Log;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

/**
 * Created by Administrator on 2018/7/19.
 */

public class ZipUtil {
    private static final int buffer = 2048;

    public static void unZip(String path)
    {
        int count = -1;
        String savepath = "";

        File file = null;
        InputStream is = null;
        FileOutputStream fos = null;
        BufferedOutputStream bos = null;

        savepath = path.substring(0, path.lastIndexOf("/")) + File.separator; //保存解压文件目录
        Log.i("test","savepath:"+savepath);
//        new File(savepath).mkdir(); //创建保存目录
        ZipFile zipFile = null;
        try
        {
            zipFile = new ZipFile(path); //解决中文乱码问题
            Enumeration<?> entries = zipFile.entries();

            while(entries.hasMoreElements())
            {
                byte buf[] = new byte[buffer];

                ZipEntry entry = (ZipEntry)entries.nextElement();

                String filename = entry.getName();
                boolean ismkdir = false;
                if(filename.lastIndexOf("/") != -1){ //检查此文件是否带有文件夹
                    ismkdir = true;
                }
                filename = savepath + filename;

                if(entry.isDirectory()){ //如果是文件夹先创建
                    file = new File(filename);
                    file.mkdirs();
                    continue;
                }
                file = new File(filename);
                if(!file.exists()){ //如果是目录先创建
                    if(ismkdir){
                        new File(filename.substring(0, filename.lastIndexOf("/"))).mkdirs(); //目录先创建
                    }
                }
                file.createNewFile(); //创建文件

                is = zipFile.getInputStream(entry);
                fos = new FileOutputStream(file);
                bos = new BufferedOutputStream(fos, buffer);

                while((count = is.read(buf)) > -1)
                {
                    bos.write(buf, 0, count);
                }
                bos.flush();
                bos.close();
                fos.close();

                is.close();
            }

            zipFile.close();

        }catch(IOException ioe){
            ioe.printStackTrace();
        }finally{
            try{
                if(bos != null){
                    bos.close();
                }
                if(fos != null) {
                    fos.close();
                }
                if(is != null){
                    is.close();
                }
                if(zipFile != null){
                    zipFile.close();
                }
            }catch(Exception e) {
                e.printStackTrace();
            }
        }
    }
}
